除了低克隆率-只有1.7%的胚胎能存活到最后阶段-创造转基因狗还有一个挑战即如何控制外部基因在核d NA中的植入位置。

Besides the low efficiency of cloning - just 1.7 per cent of embryos came to term - another challenge to creating transgenic dogs is controlling where in the nuclear DNA a foreign gene lands.

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布朗支持想要创造混合胚胎的科学家。这混合胚胎，由人的细胞核植入动物卵细胞，经过几天的发育而成。

Brown supports scientists who want to create hybrid embryos in which the nuclei of human cells are inserted into animal eggs and allowed to grow for a few days.

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核武器的多米诺效应神话为其他中东国家通过希望邻国成为核国家为自己开发核武器创造了借口。

The myth of a nuclear domino effect creates an excuse for other Middle Eastern countries -- expecting that their neighbors will be nuclear powers -- to acquire nuclear weapons themselves.

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Heck,he deserves to have his name on the board, Marsden So, Marsden concluded by his analysis that the radius of the nucleus, and this is Rutherford, by the way, coining this term.

见鬼，他的名字配写在黑板上，马斯登,马斯登根据分析得出,核的半径，这是卢瑟福，插一句，创造了这个术语。

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